A roller coaster has a mass of 650 kg. It sits at the top of a hill with height 78 m. If it drops from this hill, how fast is it going when it reaches the bottom? (Assume there is no air resistance or friction.)

A luge run is straight for the first 10 m. If the velocity of the luger when he passes the start line is + 25 m/s and his acceleration is constant at + 9.5 m/s2, about how fast is he going when he hits the first turn?

Which example identifies a change in motion that produces acceleration?

Air flows upward in the wick of a lantern because of the liquid property called

An oscillating object takes 0.10 s to complete one cycle; that is, its period is 0.10 s. what is its frequency f?

The density of aluminum is 2.7 g/cm3. What is the volume of a piece of aluminum if its mass is 8.1 grams?

The magnetic field in a solenoid is. A circular wire of radius 8 cm is concentric with a solenoid of radius 2 cm and length d = 2 meter, containing 12000 turns. The current increases at a rate of 40 A/s. What is the emf in the wire?

1.) State which definition of power below is correct. A.) the energy transferred per hour. B.) the energy transferred. C.) the energy transferred per second. D.) the force over a distance. 2.

Which types of matter are made of atoms

What are some examples of uniform motion

If cable cb is subjected to a tension that is twice that of cable ca, determine the angle u for equilibrium of the 10-kg cylinder. also, what are the tensions in wires ca and cb?